Slide rail assembly and bracket device thereof

A bracket device, comprising:

• a supporting frame having a first wall, a second wall and a side wall connected between the first wall and the second wall of the supporting frame, wherein the first wall of the supporting frame has a first bending wall;
• a bracket comprising a longitudinal wall and a mounting member, the longitudinal wall being integrated with the supporting frame, the mounting member being arranged adjacent to the longitudinal wall, wherein the bracket is fixedly arranged on the supporting frame;
• a fastening member movably connected to the bracket, the fastening member comprising a supporting part, an extension part, and a connecting part, the connecting part being between the supporting part and the extension part, and the connecting part being pivotally connected to the bracket through a pin, the extension part comprising a fastening section;
• and
• an elastic member configured to provide an elastic force to the fastening member;
• wherein the fastening member is unable to be linearly moved relative to the bracket;
• wherein when the fastening member is in a predetermined state, the fastening section is adjacent to the mounting member;
• wherein when the fastening member is rotated in a first direction from the predetermined state, the fastening section moves away from the mounting member;
• wherein the bracket device further comprises a blocking feature arranged on a rotation path of the fastening member in a second direction along which the fastening member is rotated;
• wherein when the fastening member is at the predetermined state, the blocking feature is configured beside the supporting part of the fastening member for preventing the fastening member from rotating in the second direction from the predetermined state;
• wherein when the fastening member is at the predetermined state, a surface of the first bending wall of the supporting frame is located beside the supporting part of the fastening member.